Cruise ship stocks are getting whacked after Zika travel warnings

Shares of the three major publicly traded cruise liners are getting whacked.

Shares of Norwegian Cruise Lines and Royal Caribbean have fallen by almost 6.5% each and Carnival Cruise Lines is off just over 2.5% as of 1:50 p.m. ET.

The drop-offs come the day after an advisory from the Centers for Disease Control and Prevention warned against pregnant women traveling to part of Miami, an important departure port for many of the cruise lines' ships, in the wake of several cases of the Zika virus in the area.

Additionally, almost all of the cruise lines' Caribbean and Central American destinations have reported active Zika transmission according to data from the CDC.

As of 2011, according to the US Department of Transportation Maritime Administration, roughly 35% of all North American cruise line passengers departed from the two Miami area ports.

Here's a chart showing the drops:

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